Density
What is the formula of density?
Density=Mass/Volume
What is used to protect your eyes from chemicals, broken glass, and fire?
The answer is goggles
True or False: Before leaving the lab you should always wash your hands.
True
A measurement must have a number and a _________.
Unit
When should you read the lab procedures?
Before starting the lab
What is the density in g/mL of an object with a mass of 200g and a volume of 40mL?
5 g/mL
True or False: Hot hands are used to protect your hands from chemicals.
False
What should you do if a piece of equipment breaks?
Tell your teacher!!
How do you write 34,000 in scientific notation?
3.4x104
What do you do to your exponents when you are multiplying in scientific notation?
You add the exponents when multiplying in scientific notation.
Jack has a rock. The rock has a mass of 14g and a volume of 2cm3. What is the density of the rock?
7 g/cm3
What lab equipment is used to heat certain solids?
Crucible
As you cut with a knife or other sharp instrument, you should move the instrument
Away from you
How many minutes are in 3 weeks?
30,240 minutes
A value that is measured in the lab is...
Experimental Value
True or False: The density of a specific type of material never changes.
True
What is used to close containers to avoid spillage?
Rubber Stoppers
What is the safest way to smell a substance during a lab?
Waft the air towards your face
What is the ratio of the mass of an object to its volume?
Density
What is the answer to this problem?
(2 x 10-5)+ (7 x 10-5)
9 x 10-5
The melting point of a certain element is 346 degrees Fahrenheit. What is this on the Fahrenheit scale?
The answer to this question is 655 degrees Fahrenheit.
What is used to light Bunson burners?
Strikers
Paula was not careful and knocked over a beaker. She notices a small chip in the glass. What should Paula do?
Paula should tell the teacher immediately!
What is the measure of how close a series of measurements are to one another?
Precision
A lead cylinder has a mass of 540 grams and a volume of 2.70 mL. Calculate the density of the lead cylinder. Remember to move the decimal on both sides of the problem.
20 g/mL